Is a vacuum an absence of electricity?
No, a vacuum is an absence of matter.
When you vacuum you waste power,energy,electricity and that is all used when you vacuum or any other machines that are needed to be plug were the energy comes from swithes.Not all machines use electricity like a toy it needs batteries.Batteries have electricity in them already which are made for small machines.
Yes, electricity can travel through a vacuum. Older cathode ray televisions send a beam of electrons at high speed through a vacuum. When they hit the screen they excite a "phosphor" which glows, putting light onto the TV screen. In a vacuum you won't see a spark, as there is nothing there for the charged particles to react with. Electricity moving along a wire is slowed down as it has to react slightly with all…
A complete vacuum is created in the absence of matter, especially in gaseous form. The phenomenon of suction generally associated with a vacuum results from a pressure gradient. Since P=nRT/V and there are more moles of gas outside of the vacuum there is also a greater pressure outside of the vacuum.
Transferring heat by conduction requires contact between the systems supplying and absorbing heat. In a complete vacuum, there would be an absence of anything to be in contact with - so a perfect vacuum would not allow any heat to be conducted. On the other hand, a perfect vacuum would have nothing interfering with the transfer of heat by radiation.